1 The average monthly Social Security benefit paid to retired workers in 2015 is $1,335.97, or $16,031.64 a year. 2  The average monthly Social Security benefit paid to widows & widowers is $1,282.25, or $15,387.00 per year.
Like all hadrons, neutrons are made of quarks. A neutron is made of two down quarks and one up quark. One up quark has a charge of +2/3, and the two down quarks each have a charge of -1/3. The fact that these charges cancel out is why neutrons have a neutral (0) charge. Quarks are held together by gluons.
The SI unit of quantity of electric charge is the coulomb, which is equivalent to about 7018624200000000000â 6.242Ã1018 e (e is the charge of a proton). Hence, the charge of an electron is approximately 3018839800000000000â â1.602Ã10â19 C.y convention, the charge of an electron is â1, while that of a proton is +1. Charged particles whose charges have the same sign repel one another, and particles whose charges have different signs attract.